Work-holder.



F. B. CARSON.

WORK HOLDER.

APPLICATION FILED APR.15, 191s.

Patented Mar. 10, 191i Witnesses coLuMmA PLANO UNITED s'ra'rns PATENTOFFICE.

FREDRICK EMERY CARSON, OF RICHMOND, VIRGINIA, ASSIGNOR OF ONE-THIRD TOJAMES MCEVOY AND ONE-THIRD TO \VILLIAM McEVOY, BOTH OF RICHMOND,

VIRGINIA.

WORK-HOLDER.

Application filed April 15, 1913.

lie it known that I, Fnnmnok l 'l. (.ansox, a citizen of the UnitedStates, and a resident of Richmond, in the county ot llenrico and Stateof Virginia, have invented certain new and useful Improvements in \Vork-.lloldet's, of which the following is a full, clear, and exactspecification.

This invention relates to work holders and is especially designed as anattachment for circular or rip saw tables, its function being to holdthe boards or timbers down in proper position on the table after passingthe saw.

one object of the invention is to prevent injury to the operator of thesaw. inasmuch as the holder prevents material. 'trom catching on the sawand lying back, and also serves to hold the material or timber to itsproper course, thus relieving the operator from the necessity ot placinghis hands within dangerous proximity to the saw while in, motion.

Another object is to provide a work holder for the purpose speciliedwhich is adapted to be used with equal success on timbers or boards ofvarious thicknesses and which will operate with the same beneficialetlects from the beginning to the end of a cut or for the entire lengthof every plank, thereby eliminating the extra workn'ian or helperusually employed for holding and taking otl" the boards or planks asthey are cut.

A further object is to provide a work holder for the purpose specifiedwhich may be thrown out of the path of the work when desired, as when aboard is to be fed downward upon the saw for cutting an interior orclosed ended slot.

Other objects will appear as the descrip tion proceeds.

The invention will first be described in connection with theaccompanying drawings, which constitute a part of this specification,and then more specifically set forth in the claims at the end of thedescription.

In th accompanying drawings, in which the same reference characters areused to designate similar parts throughout the several views: Figure 1is a side elevation of a work holder constructed in accordance with myinvention, parts being broken away to show the swivel joint between thearm and standard; Fig. 2 is an end view, show- Specification of LettersPatent.

Patented Hair. 10, 1914.

Serial No. 761,226.

ing the head of the arm in front elevation; Fig. 3 is a detail end viewof upper end portion ot the standard and rear end of the arm, showingthe automatically locking latch for holding the arm in operativeposition; Fig. lis a diagrammatic plan view, showing the relativepositions of the work holder, saw, and gage, and Fig. is a detailvertical section through the roller-carrying foot and its guiding pin.

ltet'erring more particularly to the drawings, A. designates a circularsaw operatively mounted on a table 13. Secured to said table at one sideol the plane of the saw is the standard (l of my improved work holder.Said standard may be of hollow metal with a web 0 into which the setscrew D is fitted.

Mounted to turn in a. horizontal plane on the upper end of the standardis an arm E having at one end a head F. As illustrated in Fig. 1, thestandard has a stepped extension 0 at: its upper end around which issnugly fitted a collar or circular flange 0 on the arm, and said collaror tlange is held down in proper position on the extension c by the setscrew l). Thus the arm is adapted to be turned on the standard withoutrocking, and the connection between them is well able to withstand thestrain to which the device is subjected in operation. Said arm may bemade of hollow metal generally circular in cross section, and its weightreduced by cutting away portions of its sides, as at a.

The head F, which is preferably made integral with the arm, isvertically disposed and has lateral flanges f forming a way for theslide G. This slide has a vertical slot g extending downwardly from apoint near its upper end, and through said slot is passed a set screw lltaking into the head F, as at f, Fig. 1. It will be readily understoodthat by means ot this slot and set screw the slide may be adjusted orset at ditlerent heights to correspond to the thickness of the work.

A block J is fixed to the outer face of the slide (r below the lower endof the slot 9, and below said block the slide is provided with a. widerslot or opening 9 having vertical inner ed es which are preferably V-shaped as at to act as guides for the foot K. Said foot is supported onthe slide G by an inverted bolt or pin L having its upper end screwedinto or otherwise fastened to the block J. A sleeve M having bores oftwo diameters, is fitted loosely around the lower end portion of the pinL, the head of the pin being adapted to engage the shoulder 0% formed atthe juncture of said bores, as clearly shown in F 5, for retaining thesleeve on the pin. The foot is secured to the sleeve in any suitablemanner as by the screw connection shown at m, Fig. This figure alsoshows the foot open at 70 through to the fork 70, so that access may behad to the bolt from below.

Journaled in the fork k of the foot is a corrugated or milled roller Ppreferably provided with pointed projections 79 of which there are aplurality of rows from end to end of the roller, thus providing meansfor effectively gripping the work at one or both sides of the cut madeby the saw. The roller may be made fast on a spindle 7) by a screw f, asshown in Fig. Said spindle extends beyond the fork at one side andcarries a ratchet wheel R keyed thereto and engaged by a pawl S pivotedon the foot and pressed by a spring T for the purpose of restricting theroller to rotation in one direction, namely that corresponding to thefeed of the work, thus preventing any reverse or rearward movement ofthe latter. The roller is held to the work with a cushioned eiiect by acoiled spring 'W mounted around the pin L and upper portion of thesleeve M, the end of said spring abutting against the block J and thefoot K.

The arm E is normally held rigidly in a position at right angles to theplane of the saw with the roller in line with the latter, Fig. i, by alatch X and a pair of lugs c and c on the standard and arm,respectively. As best shown in Fig. 3, the lug e and latch X arerounded, and the latter is spring' pressed, to permit the automaticlocking of the arm as it is swung into normal operative position. Whenit is desired to swing the arm out of operative position, as shown indotted lines in Fig. 4, the latch may be released by moving the handleY, Fig. 3, to the right. In Fig; 4, the usual gage Z is shown applied tothe table in order to clearly show the proper relative position of thework holder.

In operation it will readily be seen that as the work, a timber, forinstance, is fed along the table in the direction of the arrow in Fig.4, said work will pass below the roller on the foot of the holder almostimmediately after passing the saw. Said holder will keep the severedstrip as well as the main timber in proper position throughout thesawing operation, and will prevent material from flying back, as well asdispense with the necessity of the operator putting his hands intodangerous proximity to the saw.

Having thus describedmy invention what I claim as new and desire tosecure by Letters Patent of the United States is:

1. In a work holder for the purpose specitied, the combination with ahead, of a pin disposed vertically thereon with a head on its lower end,a sleeve having two bores of different diameters, the pin fittingloosely in the smaller bore and the head of the pin engaging theshoulder at the uncture of the bores for retaining the sleeve on thepin, a roller carrying foot secured to said sleeve, and a coiled springmounted around the pin and abutting against the foot.

2. In a work holder for the purpose specified, the combination with ahead, of an adjustable slide thereon, a spring pressed roller carryingfoot slidably mounted on said slide, a block fixed to the slide, avertically disposed pin fastened to said block and having a head on itslower end, means for removably retaining the foot on the lower endportion of the pin above its head, and a coiled spring mounted aroundthe pin and abutting at its opposite ends against the block and foot.

In testimony whereof I have signed my name to this specification in thepresence of two attesting witnesses.

FREDRICK EMERY CARSON.

IVitnesses JNo. B. NEWELL, H. IV. CARSON.

Copies of this patent may be obtained for five cents each, by addressingthe Gommllasioaer of Patents.

Washington, D. G.

